Demographics

Demographic numbers to put in tables or text.

Everyone

Demographics for all included participants.

Demographics
Summary
N Age (years) Education (years) Sex (M/F/O) EHI
844 29.08 (6.03) 14.38 (2.48) 441/391/12 5.09 (79.37)


Race n
White 606
Black or African American 82
Multiple 76
Asian 69
American Indian or Alaska Native 5
Native Hawaiian or Other Pacific Islander 3
Other 3


Hispanic ethnicity n
No 744
Yes 100


By handedness group

Demographics for included participants, by handedness group (EHI bins).

Handedness N Age (years) Education (years) Sex (M/F/O) EHI
Left 331 28.84 (6.1) 14.45 (2.39) 170/157/4 -81.61 (19.27)
Mixed 135 28.83 (6.17) 14.58 (2.6) 77/56/2 -8.89 (26.49)
Right 378 29.38 (5.93) 14.24 (2.5) 194/178/6 86.01 (16.61)
Left: (EHI <= -40) | Mixed: (-40 < EHI < 40) | Right: (EHI >= 40)


EHI distribution









Preregistered 3-way (RT, bins)

Show interaction at each level: 8 boxes, 4 boxes, 2 boxes.

Dots show per-subject means, error bars show SEM.

TODO?. Show model-estimated mean & CI, instead of per-subject.


Zoom: EHI +/- 100

Show 3-way (categorical) for strong left vs. right handers. Error bars show SEM.

Zoom: Shape

Show 3-way (categorical) for strong left vs. right handers, for squares only (and/or squares vs circles). Error bars show SEM.

Preregistered 3-way (RT, continuous)

Discussion

Questions for discussion

  • Should we show SEM/CI from the subject-level data, or from the full mixed model?
  • Is it enough to show the “tier one” figures listed below? Should we show any figures illustrating zoom analyses, and the continuous analysis?
  • Which figures show the interaction most clearly? Could we just show the 4-box plot?
  • Is it worth showing the 8-box data for the main analysis? I think it would be nice to show this raw data.
  • Any feedback on the design of the graphs?

Proposal

Tier one

  1. EHI
  2. (a, b, c) Main result: Compound figure showing RT interaction (1-box, 4-box, 8-box) in full sample.

Tier two (could leave out if we need the space)

  1. (a, b) Zoom: compound figure showing effect of shape, within strong lefties (1-box, 4-box). This shows the stro
  2. Scatterplot-like figure showing RT interaction (continuous) [If convincing]

Brainstorm - all figures I think might be worth showing

  • EHI
  • (a, b, c) Main result: Compound figure showing RT interaction (1-box, 4-box, 8-box) in full sample.
  • (a, b) Zoom: Compound figure showing RT interaction (1-box, 4-box) in strong handers, or strong handers with squares only.
  • (a, b) Zoom: show effect of shape (1-box, 4-box), either in strong handers only (revealing largest effect size, and also illustrating the effect of shape), or in the full sample (focusing on the effect of shape itself)
  • Scatterplot-like figure showing RT interaction (continuous)